Power cultivator



March 30, 1926. 1,578,769,

N. D. SERGE ANT POWER CULTIVATOR Original Filed June 28- 1921 2 Sheets-Sheet, 1

' jVewbonD. Se euub NI ENTOR.

"Y BYBm u 858m .34 Y H I ATTORNEY.

March- 30 1 2s, 1,578,769

N. LS. S ERGEANT' POWER CULTIVATOR Original Filed une 28; 1921 I 2 Sheets-Sheet 2 30 Newtonl]. SBI 'g anQINVENTOR.

T 38 syfibwidim g;- l A ATTORNEY Patented Mar. 30, 26- i UNITED; STATES 1,57sgea PATENT QQFFICE.

Nnwroiv n. SERGEANT, or srnmennoox, WISCONSIN.

rownn cnnrrvnron.

' Application filed June as, isei, Serial n). 481,002. Renewed une 92-5.

T all'ivhom z'tmay concern: Be it known that I, NEWTON I a citizen of the United States, and residing at Springbrook,\Visconsin, in the county of l/Vashburn, have invented a new and useful Power Cultivator,'of whichthe following is aspecification.v i

My invention relates to improvements in power cultivators, 'and'the objects of my improvement are to provide a cultivator having oscillating, pendant rods forstirring the soil and destroying weeds, and also to place -the cultivating means in front of the driving wheels and the power means behind the same,

V I attain this object with the mechanism illustrated in the accompanyingtwo sheets of drawings in which Figure 1 is a side elevation of my cultivator, Fig. 2 is a front endelevation' of Fig. '1, Fig. 3 is a plan View of Fig. 1, and'F1g.'4 is a separated view of. a friction clutch in section on a medial vertical plane and drawn on a larger scale.

Simllar characters refer to similar parts throughout. Certain parts are broken away to show. other partsflhidden thereby.'

. More particularly: The main frame of the i cultivator is shown at 5. Thetwo driving wheels are at 6,6. The wheel axle on which said wheels are fixed isat 7, and this axle is mounted for revolution in bearings on frame 5. Two handles 8, 8 are fixed to frame 5. A spur gear 9 is fixed on the lower end of vertical shaft 11. Andtwo spur gears 10, 10

are mounted for oscillation on vertical studs,

14, 14 engaged with gear 9. Said vertical shaft 11 is mounted for oscillation in a bear' ing fastened to the front end of frame 5. A disc crank 12 is fixed on the upper endof said shaft 11. Two bearing arms 13, 13 are mounted for pivoting on shaft ,ll bet-ween gear 9 and the bearing for said shaft. One of said studs 14, 14 is fixed in the outer end of each of arms 13 for mounting gears 1.0. Each of'two shifting rods 15, 15 is connccted to one of arms 13 and they are-both connected with a bolt to the forward end of shifting rod 40. Connecting rod 16 conncctscrank disc a with crank disc -12. Crank disc or is fixed on the lower end of shaft a which is mounted for revolution shaft 20 engage in a bearing on bracket 18. Beveled spur 17 is fixed on the upper end of shaft Said bearing bracket 18 is fastened to (gear 19 is mounted loose on gear a. frame 5. Bevel D. SERGEANT,

the running engine can tivator., By pulling rod 38 .Sflld clutch is 105 with gear 17 i and is also engageable by afpositive clutch 37.. Said shaft-'20 is mounted for revolution in;bear-, ings on brackets 21, 21 which are fastened a) frame 5. A sprocket wheel 22 is fixed on shaft 20. Sprocket chain 23 connects sprockets 22 and 24. Said sprocketwheel24 .is -fixed on the outer end of engine shaft '25, 'which is the shafto-f gas engine 28. Cam

ring 29 is mounted loose on said shaft 20,

Fig.4. Abearing sleeve 0 is mounted for reciprocation on a spline on shaft 20. An arm 30 is fixed to cam ring 29. A cam boss 31 is formed'on the inner end' of right-hand bearing 21 engaged with cam ring 29. 32, 32

are two offour similar pivoted links connecting sleeve a with friction blocks 33; Said friction blocks 33 hear on the iusideof the bandof friction wheela mounted for revolution on shaft 20. IA helical spring '34 around said shaft 20 reacts betweenv friction wheel a and bearing sleeve a. Tension and compression control rod 351s mounted for reciprocation under staples on left-hand shaft 20, and with control rod 38 reciprocal onleft-hand handle "8. Control rod 39 is mounted for, reciprocation on right-hand I handle Sand is connected to the gasoline I Control rod 40. isalso' mounted for v valve. I reciprocation on right-hand handle 8 and is connected to rods 15, 15 for controlling the V position of arms 13, 13.- A rack 41 on said right-hand handle provides engagement lugs for the handle of control .rod 40. A

sprocket 42 fastenedto friction wheel ai is connected by chain 43 to sprocket wheel '27. 5 g

In each tooth of hori'zont al spur gear wheels 10, 10 are fastened one of pendant cultivator teeth 44. And in each of the teeth of spur I gear 121s fastenedone of pendant culti- I vator teeth 45. I

'In operation: Assume engine 28 to be running, causing sliafts'25 and 20 to revolve. With positive clutch 37 out of engagement,

not operate the 0111- thrown into engagement and gears '19 and 17 are driven causing crank disc a to revolve. Since the crank radius of a is less than that of disc .12 the revolution of "0 causes disc 12 to oscillate. Thus gears 9 and 10,19 are caused to oscillate which compels similar transverse movements of all of cultivator rods .01 teeth 44. and 45. Meanwhile, if friction w-heels a --is not engaged, driving Wheels 6, 6 are stationary. To cause them to revolve rod 35 is pulled and said friction Wheeln'evol'ves, turning said -drivers through sprocket chain 43, thus. forcing said cultivator teeth forward through' the soil as they describe. arcs ofrevolution therev in. Blocks 33 can be caused to bear on Wheel 10 a solightly by: theset of rod that the *Will slipsomewhat ran'd propel the cultivav tors at ZL' SlOWBI rate than ifsethar-der. Also .the rate of =forwardmove'1nent of the cul- .tlvator Cfill bGhlO'fllfiQCl by the amount-of 15' gasoline afed vinto the engine as controlled byr-od59. The'depthof cultivation effected by teetli-l l'andslro is governed by the position; of handles 8- as carried by the operator. alhe-avidth of the strip cultivated can vary rerations are caused to cease by shoving said control rods back.

. Gonvenientl nvlaced fastenin bolts not shown, make removal of the cultivator-teeth mechanismeasy. When so removed the cul- J tivator becomes a convenient small tractor.

l'laving thus fully disclosed my inven- ';.;tion What I claim is new and desire to --secure by Letters Patentv.1s, I

-.1. .In a power cultlvator' 1n combinat1on,

a frame,.a vertical'drive shaft rotatable in bearings on said frame a .dr-ive crank fixed to said drive shaft, a vertical driven shaft rotatable in bearings on said frame, a driven 'cranklon-ger thansaid d'rive crank fixed on said driven shaft, a connecting rod between sa'i'd'drlvecand driven cranks, a spur gear .fixedionvsaidfdr-iven shaft, two arms loosely mounted on said d riven' shaft, a vertical shaft mounted in each armyeachofsald shafts carrying a gear meshlng -W1tl1 said gspuregear, cultivatorteethat the lower end of each of said: driven, shafts,means for adjusting said .arms. about their pivots and means for rotating said drive shaft.

2. In a poiver cultivator incombination,

a frame, a Wheel shaft rotatable On-said frame, two vehicle tractor Wheels rigidly .mounted on said shaft, awprime mover .mounted O'i'lSH-lCl frame, controllablepower connections between. said prime JDOVBI and ,saidlwheelshaft, a drive shaft vertically rotatable hearings. on said .frame,ta. spur gear rotatable in a vertical aXls 1n hearings on said frame, power connections between said drive shaft and saidldriver gear Wherei by when said shaft revolves saidflgear oscillates, two arms loosely mounted on said driven shaft, a -ver'tical; shaft :inounted in eachwarm, each of sald-shafts carrying a gear meshing With said spur gearj-icultivator teethat the lower end ofteachofsaid v driven shafts, means for adjusting said arms about their pivots, andmeans for connecting said drive shaft to saidprimelmover.

' i NEWTON D; JSERGEANT. 

